garimpeireo

economy of Brazil

...Most gold and diamonds are mined in Minas Gerais, and smaller amounts are produced in Pará, particularly in the vicinity of Serra Pelada, where tens of thousands of garimpeiros swarmed during gold rushes in the 1980s and ’90s. Minas Gerais, Bahia, and Espírito Santo are the major sources of Brazil’s enormous range of gems—topazes,...

environmental impact on Amazon River

...a feverish pitch in the 1980s, stimulated by high world prices of gold. At the height of the Amazon “gold rush,” as many as a half million transient miners (garimpeireos) came equipped with picks, shovels, and sluice boxes to search for the mineral in the alluvial deposits of the Tocantins valley at Serra Pelada. Brazil’s annual production...